Other info. - This species has only been found in one location of Ste. Genevieve County in Missouri. The plant is considered a glacial relic that was trapped in a microclimate as the glaciers receded with the present global warming period. This plant is easy to separate from the two other species of Lycopodium in Missouri because its leaves encircle the branches and give the branches a round cross section. The other species have branches which are flat in cross section.
The Missouri material belongs to the variety dendroideum (Michx.) D. EatonIn more current taxonomy, this variety has been made its own species, L. dendroideum Michx.